Redeemable Convertible Preferred Stock - Additional Information (Details) - USD ($) $ in Thousands		12 Months Ended
	Dec. 16, 2019	Jun. 30, 2020
Schedule Of Stockholders Equity [Line Items]
Reclassification of redeemable convertible preferred stock		$ 276,307
Common Stock
Schedule Of Stockholders Equity [Line Items]
Redeemable convertible preferred stock converted	52,434,505
Reclassification of redeemable convertible preferred stock		$ 1
Common Stock and Additional Paid-in Capital
Schedule Of Stockholders Equity [Line Items]
Reclassification of redeemable convertible preferred stock	$ 276,300